Anthemis (Ammanthus), (Boiss. & Heldr.) R. Fernandes. Slender

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 158

Subgen. Ammanthus (Boiss. & Heldr.) R. Fernandes. Slender annuals, with numerous simple or branched stems from a basal rosette. Receptacular scales hyaline, narrowly lanceolate or linear, caducous, or absent. Ligules, if present, very short, white. Achenes cylindrical, curved, the peripheral persistent and with obscure ribs, the inner caducous, distinctly ribbed.